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L6986H 数据表(PDF) 9 Page - STMicroelectronics

部件名 L6986H
功能描述  38 V, 2 A synchronous step-down switching regulator with 30 μA quiescent current
PDF  68 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L6986H 数据表(HTML) 9 Page - STMicroelectronics

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TJ = 25 °C, VIN= 12 V unless otherwise specified.
Table 6. fSW selection
Symbol
RVCC (E24 series)
RGND (E24 series)
Tj
fSW min.
fSW typ.
fSW max.
Unit
fSW
0 Ω
NC
(1)
225
250
275
kHz
1.8 Ω
NC
(1)(2)
-
285
-
3.3 kΩ
NC
-
330
-
5.6 kΩ
NC
-
380
-
10 kΩ
NC
-
435
-
NC
0 Ω
(3)
450
500
550
18 kΩ
NC
(1) (3)
-
575
-
33 kΩ
NC
-
660
-
56 kΩ
NC
-
755
-
NC
1.8 kΩ
-
870
-
NC
3.3 kΩ
(3)
900
1000
1100
NC
5.6 kΩ
(2) (3)
-
1150
-
NC
10 kΩ
-
1310
-
NC
18 kΩ
-
1500
-
NC
33 kΩ
(3)
1575
1750
1925
NC
56 kΩ
(3)
1800
2000
2200
1. Synchronization as slave in LNM between 275 kHz and 1400 kHz.
2. Not tested in production
3. Synchronization as slave in LNM between 475 kHz and 2200 kHz
TJ = 25 °C, VIN = 12 V unless otherwise specified.
Table 7. LNM/ LCM selection (L6986H3V3)
Symbol RVCC(E24 1%) RGND(E24 1%) Operating mode
VRST/VOUT (tgt.
value)
VRST min. VRST typ. VRST max. Unit
VRST
0 Ω
NC
LCM
93%
3.008
3.069
3.130
V
8.2 kΩ
NC
80%
2.587
2.640
2.693
18 kΩ
NC
87%
2.814
2.871
2.928
39 kΩ
NC
96%
3.105
3.168
3.231
NC
0 Ω
LNM
93%
3.008
3.069
3.130
NC
8.2 kΩ
80%
2.587
2.640
2.693
NC
18 kΩ
87%
2.814
2.871
2.928
NC
39 kΩ
96%
3.105
3.168
3.231
L6986H
Electrical characteristics
DS12905 - Rev 2
page 9/68



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